C++ Builder模拟数字双时钟示例v0.1

//--------------------------------------------------------------------------- #include <vcl.h> #include <math.h> #pragma hdrstop #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; const double PI=3.14159265; int centerX,centerY,r,r1; TCanvas *c; TDateTime startTime,elapsedTime; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { DoubleBuffered=true; //开启双缓冲 Edit1->Text=Date().DateString(); //显示年月日 LongTimeFormat="hh:nn:ss.zzz"; //默认时间格式：时:分:秒.毫秒 Button1->Click(); //秒表清零 ActiveControl=Button2; r=Image1->Width/2; //半径 centerX=r; //圆心 centerY=r; r-=2; r1=r-20; c=Image1->Canvas; } //--------------------------------------------------------------------------- //时钟定时器函数每秒执行 void __fastcall TForm1::Timer1Timer(TObject *Sender) { unsigned short hour,min,sec,msec; TDateTime time=Time(); //现在时间 Edit2->Text=time.FormatString("hh:nn:ss"); //显示时分秒 time.DecodeTime(&hour,&min,&sec,&msec); //解码时、分、秒、毫秒 c->Pen->Width=1; c->Pen->Color=clBlack; c->Brush->Style=bsSolid; c->Brush->Color=clTeal; c->Ellipse(Image1->ClientRect); //钟面圆青色 c->Brush->Color=clYellow; c->Ellipse(centerX-10,centerY-10,centerX+10,centerY+10); //钟心黄色小圆 // 时钟刻度黄色 c->Pen->Width=8; c->Pen->Color=clYellow; int x1,y1,x2,y2; for(int i=0,angle=0;i<12;i++,angle+=30) { double rad=PI*angle/180; x1=centerX+r*cos(rad); y1=centerY-r*sin(rad); x2=centerX+r1*cos(rad); y2=centerY-r1*sin(rad); c->MoveTo(x1,y1); c->LineTo(x2,y2); } // 外圈圆灰色 c->Brush->Style=bsClear; c->Pen->Color=clGray; c->Pen->Width=5; c->Ellipse(centerX-r,centerY-r,centerX+r,centerY+r); // 黑色矩形 c->Brush->Color=clBlack; c->FillRect(TRect(centerX-25,centerY-60,centerX+25,centerY-40)); // 灰色品牌ZEC AnsiString brand="ZEC"; c->Font->Color=clGray; c->Font->Size=12; c->Font->Style=TFontStyles()<<fsBold; c->TextOut(centerX-c->TextWidth(brand)/2,centerY-60,brand); // 画秒针（红色） int angle=((75-sec)%60)*6; double rad=PI*angle/180; int x=centerX+r1*cos(rad); int y=centerY-r1*sin(rad); c->Pen->Color=clRed; c->Pen->Width=3; c->MoveTo(centerX,centerY); c->LineTo(x,y); } //--------------------------------------------------------------------------- //秒表清零 void __fastcall TForm1::Button1Click(TObject *Sender) { TDateTime time=StrToTime("00:00:00.000"); Edit3->Text=time.TimeString(); } //--------------------------------------------------------------------------- //秒表开始 void __fastcall TForm1::Button2Click(TObject *Sender) { startTime=Time(); Timer2->Enabled=true; } //--------------------------------------------------------------------------- //秒表停止 void __fastcall TForm1::Button3Click(TObject *Sender) { Timer2->Enabled=false; } //--------------------------------------------------------------------------- //秒表定时器函数（每50毫秒执行） void __fastcall TForm1::Timer2Timer(TObject *Sender) { elapsedTime=Time()-startTime; Edit3->Text=elapsedTime.TimeString(); } //---------------------------------------------------------------------------